The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A165624 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A165624

a(n) = 3^(3^n)/(3^n)^3.
(history; published version)

#11 by Susanna Cuyler at Tue Mar 31 10:52:54 EDT 2020

STATUS

reviewed

approved

#10 by Joerg Arndt at Tue Mar 31 10:14:52 EDT 2020

STATUS

proposed

reviewed

#9 by Joerg Arndt at Tue Mar 31 10:14:48 EDT 2020

STATUS

editing

proposed

#8 by Joerg Arndt at Tue Mar 31 10:14:41 EDT 2020

MATHEMATICA

lst={}; Do[i=3^n/n^3; If[IntegerQ[i], AppendTo[lst, n]], {n, 6!}]; lst

STATUS

proposed

editing

#7 by Michel Marcus at Tue Mar 31 09:39:00 EDT 2020

STATUS

editing

proposed

#6 by Michel Marcus at Tue Mar 31 09:38:54 EDT 2020

NAME

a(n) = 3^(3^n)/(3^n)^3.

FORMULA

a(n) = 3^A107583(n). [_R. J. Mathar, _, Oct 07 2009]

EXAMPLE

a(n=0) = 3^1/1^3 = 3. a(n=1) = 3^3/3^3 = 1. a(n=2) = 3^9/9^3 = 27.

STATUS

approved

editing

#5 by Harvey P. Dale at Tue Sep 17 12:21:22 EDT 2019

STATUS

editing

approved

#4 by Harvey P. Dale at Tue Sep 17 12:21:20 EDT 2019

MATHEMATICA

Table[3^(3^n)/(3^n)^3, {n, 0, 6}] (* Harvey P. Dale, Sep 17 2019 *)

STATUS

approved

editing

#3 by Russ Cox at Sat Mar 31 12:38:27 EDT 2012

AUTHOR

_Vladimir Joseph Stephan Orlovsky (4vladimir(AT)gmail.com), _, Sep 22 2009

Discussion

Sat Mar 31

12:38

OEIS Server: https://oeis.org/edit/global/876

#2 by Russ Cox at Fri Mar 30 17:40:10 EDT 2012

EXTENSIONS

Definition simplified by _R. J. Mathar (mathar(AT)strw.leidenuniv.nl), _, Oct 07 2009

Discussion

Fri Mar 30

17:40

OEIS Server: https://oeis.org/edit/global/190